John Deere 6620 All generations tuning files
Typical stock and Stage 1 figures for each engine. Open an engine for torque, ECU and technical data.
Engine
Stock
Stage 1
Gain
6.8 CR - 125hp
125 hp
150 hp
+25 hp
Figures are typical for a stock vehicle in good condition. Actual results depend on condition, fuel quality and fitted hardware.